Deriving Rasters for Terrain Analysis
Using ArcGIS with Complete Solutions
A developer wants to identify potential sites for a municipal airport. Potential sites will be
nearly flat and below 1,500 feet, where the thicker air provides more lift for easier
takeoffs and landings. Which surface types would be most helpful for this analysis?
(Choose two.) - ANSWER-X Elevation; Hillshade
A golf course developer wants to use elevation, slope, and aspect surfaces to analyze
potential sites for a small (nine-hole) golf course. Potential sites need to have smoothly
changing slopes. Which source elevation raster would be most appropriate for this
analysis? - ANSWER-An elevation raster with a 1-foot horizontal resolution and a 0.5-
foot vertical resolution
A ski resort owner wants to identify potential areas for a new expert ski run. Potential
areas must be very steep and face northward. Given an elevation surface of
ski_elevation, you have already derived an aspect surface named ski_aspect and a
slope surface named ski_slope containing percent slope values. Which of the following
Raster Calculator expressions is most appropriate for the given criteria? - ANSWER-
(ski_slope > 100) & (ski_aspect >= 292.5) & (ski_aspect <= 67.5)
An oceanographer wants to identify areas off the coast of Alaska where large waves are
most likely to form. Large waves tend to form where the ocean floor rises quickly in
areas where the water is less than 50 feet deep. Which surface types would be most
helpful for this analysis? (Choose two.) - ANSWER-Elevation; Slope
Slope values expressed in percent will range from 0 percent to 100 percent. -
ANSWER-False
The Astronomical Society of the Pacific wants to identify potential sites for a new
observatory in the mountains of Chile. Potential sites need to be high up in thinner air
and have an uninterrupted horizon without interference from mountains or other
obstructions. Which of the following surface types would be most helpful? (Choose two.)
- ANSWER-Hillshade surface; Slope surface
The base contour sets the minimum value for which contour lines will be created. -
ANSWER-False
The brightness values of cells along the edge of a hillshade raster are less reliable than
interior cells. - ANSWER-True
The parks department wants to identify potential areas for sustainable farming of white
pine. Potential areas will be southward-facing slopes that have good drainage (for
example, not flat) and are also not too steep for the harvesting machinery. Given an
Using ArcGIS with Complete Solutions
A developer wants to identify potential sites for a municipal airport. Potential sites will be
nearly flat and below 1,500 feet, where the thicker air provides more lift for easier
takeoffs and landings. Which surface types would be most helpful for this analysis?
(Choose two.) - ANSWER-X Elevation; Hillshade
A golf course developer wants to use elevation, slope, and aspect surfaces to analyze
potential sites for a small (nine-hole) golf course. Potential sites need to have smoothly
changing slopes. Which source elevation raster would be most appropriate for this
analysis? - ANSWER-An elevation raster with a 1-foot horizontal resolution and a 0.5-
foot vertical resolution
A ski resort owner wants to identify potential areas for a new expert ski run. Potential
areas must be very steep and face northward. Given an elevation surface of
ski_elevation, you have already derived an aspect surface named ski_aspect and a
slope surface named ski_slope containing percent slope values. Which of the following
Raster Calculator expressions is most appropriate for the given criteria? - ANSWER-
(ski_slope > 100) & (ski_aspect >= 292.5) & (ski_aspect <= 67.5)
An oceanographer wants to identify areas off the coast of Alaska where large waves are
most likely to form. Large waves tend to form where the ocean floor rises quickly in
areas where the water is less than 50 feet deep. Which surface types would be most
helpful for this analysis? (Choose two.) - ANSWER-Elevation; Slope
Slope values expressed in percent will range from 0 percent to 100 percent. -
ANSWER-False
The Astronomical Society of the Pacific wants to identify potential sites for a new
observatory in the mountains of Chile. Potential sites need to be high up in thinner air
and have an uninterrupted horizon without interference from mountains or other
obstructions. Which of the following surface types would be most helpful? (Choose two.)
- ANSWER-Hillshade surface; Slope surface
The base contour sets the minimum value for which contour lines will be created. -
ANSWER-False
The brightness values of cells along the edge of a hillshade raster are less reliable than
interior cells. - ANSWER-True
The parks department wants to identify potential areas for sustainable farming of white
pine. Potential areas will be southward-facing slopes that have good drainage (for
example, not flat) and are also not too steep for the harvesting machinery. Given an
